多温度阶梯退火对有机聚合物太阳能电池器件性能的影响

Effect of multiple temperature-step annealing on the performances of polymer solar cells

以聚3-己氧基噻吩(P3HT)作为给体,富勒烯衍生物(ICBA)作为受体,制备了体异质结结构的聚合物太阳能电池,研究不同热退火条件对器件的光伏输出特性及稳定性的影响.研究发现,采用多温度、阶梯退火比单一温度退火能使器件的光伏输出性能明显提高,与此同时器件的寿命显著延长,可以在未封装的环境下保持器件性能的稳定,减缓器件的衰退.

In the paper, a series of bulk-heterojunction polymer solar cells using poly（3-hexyl-thiophene） （P3HT） as a donor and indene-C60 bisadduct （ICBA） as an accepter is fabricated. Effect of annealing process on the cell characteristics is investigated. It is found that the cell having a multiple temperature-step annealing can distinctly improve its photovoltaic performance. At the same time the multiple temperature-step annealing process can also significantly improve the life time of the device. The device maintains a stable performance without being encapsulated.